Graphene is one of a couple of kinds of carbon known as its "allotropes". Allotropes are in a general sense one kind of sorts of a comparable segment, in which comparable particles security together in different ways. For example, particles of oxygen can integrate as two particles – O2, which makes up a fifth of Earth's air – or as three atoms, ozone, which shields us from brilliant radiation. By virtue of carbon, alongside fiery debris and charcoal, the most generally known structures are gem, graphite, and the fullerenes. Invaluable stones, the particles are planned in a pyramid shaped cross area.